Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4584811bd22a06…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 07:12:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 115731d75ea4b85d9876253ca62726fb SHA-1: aa4237021c10908e18a7b6dbce1bd9c18fa08f49 SHA-256: 3a4584811bd22a06e6d0f9f66000260f728c4517d9ff7f5aeb84635ff2ef7ba3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-hack-side-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/easiest-way-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/full-throttle-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/bloxburg-fun-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-ingame-score-hacks_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-accessories-in-roblox-codes_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-script-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2A 22532 bytes
SHA-256: 76ce1dbeac38b01deb654421a321dd804ee1922bf1d084ffab3a1e9d7bf40beb
font_01_sfnt_off0000606c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 18952 bytes
SHA-256: 40c279a66463ef196a8a404994614f52e07de0353440c07e3f3ef55baa41d01e

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